You can use this procedure to format a text file (.txt) into a post script file (.ps) file

To create a post script formatted file, use:

enscript -2Gr -p temp.ps textFileName

To print the post script file:

Second floor lab (SEL 2260): lpr -Picl2 temp.ps
Fourth floor lab (SEL 4050): lpr -Picl4 temp.ps

Don't forget to delete the temporary post script file:

rm temp.ps